Fibrous dysplasia is an uncommon benign disease of the bone, with slow progression. Monostotic involvement of the paranasal sinuses is rare. We report a 54year-old woman who had complaints of facial asymmet r y, chronic sinusitis, recurrent headaches, and nasal obstruction for two years. Conventional radiography showed opacification and expansion of the maxillary sinus. Axial and coronal comput...

OBJECTIVES/HYPOTHESIS Examine a protective crumple zone effect of paranasal sinuses and nasal cavity on skull base fractures. STUDY DESIGN Randomized-control, cadaveric study. METHODS In the experimental group (n = 4), the nasal cavity and bilateral sinuses of cadavers were obliterated with bone cement, whereas the control group (n = 4) had native sinus architecture. Increasing frontal, gla...

When maximal anchorage is required during orthodontic treatment, additional aids are often needed to support the anchoring teeth. While intra-oral aids may be limited in their anchorage potential, extra-oral anchoring aids are often rejected by the patients. Endosseous implants may therefore be a valuable alternative for stable intra-oral anchorage. However, the possibility of using conventiona...

Background: Saddle nose deformities mostly result from trauma. Most reports of saddle nose correction after trauma relate to isolated fractures, but in this article the experience of the authors is presented in relation to bone grafting for the correction of the saddle nose in multiple facial fracture patients. Objectives: The current study aimed to report the results of a protocol for choosing...

BACKGROUND Injectable calcitonin is effective in reducing spinal bone loss in steroid-dependent asthma but side effects are frequent. In contrast, a nasal spray presentation has been shown to be effective and well tolerated in involutional osteoporosis. To test the efficacy of nasal calcitonin a two year prospective trial was conducted in 44 steroid-dependent asthmatic patients. METHODS All p...

Cartilaginous tumors are common in the long bones of the body and relatively rare in the head and neck. When they do occur in the head and neck, the most common site is the midface. Since the first case report by Morgan in 1842, approximately 150 cases of head and neck chondroma have been recorded in the English-language literature. In this article, the authors describe a new case in which a ch...

We experienced a very rare case of maxillary bone metastasis from lung cancer. The patient was a 77-year-old Japanese man with 1-month history of right alar swelling with hard pain as his chief complaint. Computed tomography scan showed a 1 cm length round lesion in the right nasal vestibule close to the pyriform fossa edge of the right maxillary bone. He had severe pulmonary dysfunction due to...

One major pathogenic factor of Porphyromonas gingivalis is Arg-gingipain (Rgp), an arginine-specific cysteine proteinase. To clarify the effect of rgpA DNA vaccine, we immunized BALB/c mice via the abdomen with a Gene Gun or via the nasal cavity weekly for 6 weeks. After immunization, the mice were challenged orally with P. gingivalis. Immunization elicited IgG responses against P. gingivalis i...

choanal polyps are a form of nasal polyps that grow toward the choana with a single stalk. septochoanal polyp is a rare entity that originates from the mucosa of the nasal septum with choanal extension. the most common site of its origin is mainly the superior aspect of the posterior portion of the nasal septum. however, metaplastic ossification is a rare event in nasal polyp and to the best of...